Shoe machine



'May 7, 1929. T. LUND SHOE MACHINE Filed July 22, 1927 1 L UNITED STATES', PATENT -o F -r1ei=.:. g

THOMAS 'LUND; 0E BEVERLY, MASSACHUSETTS, AssIGNon To UNITED sHOE MA! Patented May 7,1929.

L,CHINERY CORPORATION, or rATERs-ON, NEW JERSEY, AA CORPORATION orl NEW JERSEY.

. sHoE MACHINE.

' Appiication ined July 22,

5 this character and in others in which work of varying thickness is clamped for the driving of the fastenings, it is a common practiceto first apply a preliminary or measuring pressure, which establishes proper contact of the,

engaging members with the work. Then a further relative movement of the vmembers creates a final or` clamping pressure. A measuring mechanism in such machines,roi' which an excellent exampleis disclosed in Letters Patent of the United States No. 1,157,688, Glidden, October 26, 1915, may include movable wedges lrestrained by guides secured lin place by'screwsand .subjected to considerable strain in operation.

An object of my invention is tO provide for more effective retention, in such mechanisms as above indicated, of the guiding or other fixed members, with a resulting reduction in the wear of and the liability of damage by loosened parts. This I accomplish by associating with the guide y'means engaging its ends and being variable as to the pressure exerted.y Thus the guide is held firmly against longitudinal displacement, and the loosening eHect upon the other securing means for the guide is minimized. The retaining or pressure means is preferably in the form ofan 'abutment-lever and, in such an organizationas that of the above patent, contact-s with a bar furnishing a `guide for one of a series of co-operating wedges. A 1

A further'object of the invention 'is to support securely,'with theuse of few elements, a casing` for enclosingl such a mechanism as that which measures the work in the machine disclosed in the previously mentioned patent. To thisend, one element is caused to perform two functions-to serve as a mounting both for the casing and for the retaining or abutment means for a fixed member enclosed by the casing, as the guide member vof measuring mechanism. As herein illustrated, there is Vthreaded into the machine-frame, at yeach extremity of the guide member, a screw, upon which the casing for the mechanism is supported,pand these screws also carry the levers .or other ,abutment members which contact rand enclosing casing; r f

i927. serial' No. aliases.

with the guide member. 4Regardless of the manner in which the abutment means is arranged, I prefer to support the casing upon a plurality of fixed members and upon an additional adjustable member, this last ele- Y i ment being illustrated asin the form of an eccentric. By this,l arrangement, simultaneous Contact is obtained at such a 'number of points thatthe kcasing is held firmly against the'measuring mechanismof a heel-nailing machine with my improved abutmentmeans Fig. 2 is a detail, partly in partly inysection, of oneof the screws supporting both an abutment-lever and the casing; and n P VF ig. 3 is a sectional 'detail through the ad justable casing-support.

YAt 10 is vsh'owna portion 'of the frame, tO-

k,f etherwiththe bracket upon `which is mounted the measuring` mechanism of nthe Glidden 1 Y type of lieelattacliing machine, to which refeience has already Pbeenimade. Resting directlyupon the bracket is a bar 12, serving as a guide for the lowest of a vertical series of horizontally mojvable wedges 14;- These wedges have formed upon theirrear edges rack-teeth, with which mesh elongated pinelevation and ions 16, 16. A double rack-bar 18 is arranged A to reciprocate with slight clearance in 'a space in the under side of the bar12. The rack-y bar is acted upon by a'spring (not shown),

ingfand series of wedges, ablock 19 in which is secured a rod20. This'rod, in turn, swings the top lever of the heelmg machine upon its fulcrum and lowers the-j ackv to bring into engagement. the shoe uponsaid jack andV the heel which is to be nailed. The guide-bar 12 is secured tothe frame-bracket by "screws 22, which are subjected to various stresses tending to loosen them. They may thus be raised above lthe upper'surface of thebar,

. Y y p f 65 n Fig.- 1 shows in perspective a portion of Y 24, about which is fulcrumed a lever 26. The upper extremity ofthe leveris orcedagamst the bar byan adjusting screw 28, which is threaded through the lower arm ot the lever and engages the frame. The bar 1s thus retained between rigid abutments, which may be caused to bear with all necessary pressure and entirely free the screws 22 of lateral strains, these screws now chieiiy holding said bar against iuiuard dis-placement. Under these conditions, the screws remain seated, and there no interference between them and the lower wedge, nor between the guide-bar- 12 and the rack-bar I8. a

Itis desired to protect the measuring mechanism from dirt, nails and other objects which might ciog it. Forthis purpose, it is surrounded by a casing rest-ing against the trame and bracket and having an opening 82 at its top,thro1 1gh which passes the block 19.

- The bottom is alsoopen to permitthe appli- Vthe enclosed mechanism.

cation ofthe casing to the measuring mechanism. Other openings, as those indicated at 34, permit the inspection and lubrication of It is desired that this casing shall bereadily removable, and that it shall beheld securely and so it does not rattle under the influence of the vibration of the machine in operation. I eiiect this, and at the same time lessen the cost of the mounting, in the following manner: Each of the screws 24, upon which` are ulcrumed the abutment-levers, has a head provided with a circumferential groove, at the opposite sides ot which are inwardlyconverging walls 38, 38. Projecting downwardly within the casing are lugs 40, the ends orn which are so located and so oppositely inclined at 42 that, when said casing is properly situated over the measuring 1nechanism, they engage the walls 38, and, seated by the weightot' the casing, hold the llower portion firmly against movement. At the top of thecasing, in front of the opening 32, is a depression with upwardly converging walls 44, 44. Threaded into the front of the trame-bracket is a screw 46 arranged to clamp adjustably against rotation an eccentric-disk 48, the periphery of which is inclined at50, 50 to correspond to the incline of the walls 44, 44. The adjustment of the eccentric places its upper edge at different distances from the screws 24. It may be located at such an angle about its mounting screw that, when the lugs 40 are seated in the grooves in the screw-heads 36, the walls 44 and 50 are in like iirm engagement. There is thus aorded a three-,point bearing, by which the casing is securely supported, and which calls for the employment of elements peculiar to the support at one only of the three point-s. Complete access to the enclosed mechanism may be had by simply lifting the casing from its supports.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is l. In a shoe machine, mechanism having reciprocatory members arranged in a co-operatin g series, a guide for one oi? the members, and

variable pressure means engaging an end of the guide.

2.v In a shoe machine, measuring mechanism having reciprocatory members, a guide ior one ot the members, an abutment-lever engaging each end oi the guide, and means for varying the pressure ot the levers against the guide. i l

,8. In a shoe n'lachine, measuring mechanism having reciprocatory wedges, a bar turnishin g a guide for one of the wedges, and Va lever contacting with each end of the bar.

4.' In ya fastening-inserting machine, a trame measuring mechanism mounted upon the frame and having a vertical series of reciprocatory wedges, a bar furnishing a guide for lthe lowest wedge,.securing means extending through the bar, a lever ulcrumed upon the frame at each end of the bar and contacting therewith, and a screw threaded through eachlever and engaging `.the trame.

5. The combination ,with a mechanism hava member fixed against movement, of a casing `for the mechanism, mounting means for rthe casing, and retaining meansV tor the fixed member carried by the mounting means.

6. The combination with a mechanism having aguid'e member, of an enclosing casing for themechanism, supporting means for the casing,land retaining means for the guide member movable uponthe supporting means.

7. In combination, the frameof a fasten- Aing-inserting machine, measuring mechanism mounted upon the frame, a member projecting from the frame adjacent to the measuring mechanism, a casing for the measuring mecha-` nism mounted upon the member, and abutmentmeans carried by the member and contacting Awith. an element-of the measuring mechanism. Y 1 Y 8. In combination, the :trame oft a fasteninginserting machine, measuring mechanism mounted upon the frame and including a guide member, a screw threaded into the iframe at each extremity of the guide member, a casing for the measuring mechanism supported bythe screws,` and an abutment member carried by each screw and contacting with the guide member.

9. In combination, the trame of a fastening-inserting machine, measuring mechanismV mounted upon the frame and including a guide member, a screw threaded into the trame at each extremity of the guide member, a casing for vthe measuring mechanism supported "by the screws, an abutment member carried byeach screw and, contacting with the guide member, and a further support for the casing adjustable at its point of contact therewith toward and from the screws.

l0. In combination, the frame of a fastening-inserting machine, measuring mechanism mounted upon the frame and including a guide member, a. screw threaded into the frame at each extremity of the guide member, a casing for the measuring mechanism supported by the screws, a lever ulcrumed upon each screw and contacting with the guide member, and a screw threaded through each lever and engaging the frame.

l1. In combination, the frame of a fastening-inserting machine, measuring mechanism mounted upon the frame and including al guide member, a screw threaded into the trame at each extremity of the guide member and provided with a slotted head, a casing for the measuring mechanism having projections entering the slots of the screw-heads, and a lever ulcrumed upon each'screw and contacting with the guide member.

12. The combination with a frame and mechanism mounted thereon, of a casing for ing adjustable upon the frame.

1 3. The combination with a frame and mechanism mounted thereon, of a casing enclosing tl e mechanism, two supporting memi bers vfor t 1e lower portion of the casing fixed against movement upon the frame, a third supporting member for the upper portion of the casing, and means for securing said third member with its point oi engagement with K the casing at different distances from the iiXed members. f

14. In a nailing machine, the combination witha machine-frame, of measuring mechanism mounted thereon, a casing enclosing the fmea-suring mechanism7 projections from the frame with which the Vcasing contacts, and

an eccentric adjustable upon the frame and contacting with the casing.

In testimony whereof I have signed my name to this speciiication.

THOMAS LUND. 

